OVERALL
ALTERNATIVES
SPECS
VS AVERAGE
REVIEWS
Scored using eReaders Methodology v1.0
eReaders Methodology v1.0
Mathematical & Unbiased Scoring
Products in this category are evaluated mathematically under Frontumo eReaders Methodology v1.0 using verified laboratory benchmarks, technical specifications, and authentic consumer ratings with 0% commercial bias.
Explore eReaders Methodology v1.0

Onyx Boox Tab Ultra Review | 68 Data compared

Avg. price:~£530Screen size:10.3 inchesPixel density:227 ppiInternal storage:128 GBBattery life:23 hoursSupported bookstore ecosystem:Android Open Ecosystem

Onyx Boox Tab Ultra Review: Compare 68 technical specifications and user reviews to see how this product ranks in the eReaders category and whether it is worth buying.

8.0

Overall score

Score
8.0/ 10
✕
What it is
An overall evaluation of the eReader's quality, based on technical analyses and user reviews.
When it matters
When you need a quick reference to identify the best eReaders on the market.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 88% of models
Score components

90%

8.1

Technical score

10%

6.9

User score

â–²Better than 88% of ereaders
8.1

Technical score

Technical score
8.1/ 10
✕
What it is
An assessment of the eReader's technical performance, covering key areas such as display quality, reading features, battery life, format support, ecosystem, and design.
When it matters
When you want to compare eReaders based on technical performance and available features.
Score distribution
â–¼
<55-66-77-88-99-10
★ Better than 93% of models
Score components

25%

8.3

Display

22%

9.4

Reading

18%

7.1

Battery

14%

9.6

Hardware

12%

8.7

Connectivity

9%

3.0

Design

★Better than 93% of ereaders
6.9

User score

User score
6.9/ 10
✕
What it is
A rating that combines user reviews and the total number of reviews received by the eReader.
When it matters
When you want to know how an eReader feels in daily reading and how reliable it is for screen comfort, battery life, and library management according to user feedback.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 88% of models
Score components

70%

7.5

User ratings

30%

5.3

Number of reviews

Based on 120 buyer reviews from online shops.
Read buyer reviews on Amazon →
How we calculate this
User ratings – average star rating across all shop listings, weighted by how many reviews each has, on a 1–10 scale.
Number of reviews – how many buyer reviews the product has, on a logarithmic scale; the 8% most-reviewed models in the category get 10.
â–¼Worse than 88% of ereaders
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Best prices

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Best rankings

Available: ranking among products currently available (including other versions of this product).All: ranking among all products in the database.
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Technical Specifications of eReader Onyx Boox Tab Ultra

Technical score
Technical score
8.1/ 10
✕
What it is
An assessment of the eReader's technical performance, covering key areas such as display quality, reading features, battery life, format support, ecosystem, and design.
When it matters
When you want to compare eReaders based on technical performance and available features.
Score distribution
â–¼
<55-66-77-88-99-10
★ Better than 93% of models
Score components:

25%

8.3

Display

22%

9.4

Reading

18%

7.1

Battery

14%

9.6

Hardware

12%

8.7

Connectivity

9%

3.0

Design

8.1
User score
User score
6.9/ 10
✕
What it is
A rating that combines user reviews and the total number of reviews received by the eReader.
When it matters
When you want to know how an eReader feels in daily reading and how reliable it is for screen comfort, battery life, and library management according to user feedback.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 88% of models
Score components

70%

7.5

User ratings

30%

5.3

Number of reviews

Based on 120 buyer reviews from online shops.
Read buyer reviews on Amazon →
How we calculate this
User ratings – average star rating across all shop listings, weighted by how many reviews each has, on a 1–10 scale.
Number of reviews – how many buyer reviews the product has, on a logarithmic scale; the 8% most-reviewed models in the category get 10.
6.9
Popularity
Popularity
5.3/ 10
✕
What it is
An indicator based on the number of reviews received by the eReader.
When it matters
When you prefer to choose an eReader reviewed and selected by many other buyers.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 52% of models
Popularity:
Onyx Boox Tab Ultra has a popularity score of 5.3 points, which is lower than that of 51.6% of products in this category.
5.3
Value for money
Value for money
7.9/ 10
✕
What it is
An indicator that combines the eReader's overall rating with its cost.
When it matters
When you are looking for an eReader with a good balance between reading comfort, features, and price.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 70% of models
Score components:

60%

8.0

Overall score

40%

7.7

Price

7.9
Brand name
Onyx
Screen size
10.3 inches
Screen size
10.3 inches
â–² Better than 87% of models
Market range: <5 inches – >10 inches
This ereader has a screen size of 10.3 inches which is larger than 86.9% on this spec and equal to 11.5% of eReaders.
Screen resolution
1404x1872 px
Screen resolution
1404x1872 px
â–² Better than 74% of models
This ereader uses a screen resolution of 1404x1872 px, which is sharper than that of 73.8% of eReaders and the same as that of 17.2% of eReaders.
Pixel density
227 ppi
Pixel density
227 ppi
â–¼ Worse than 52% of models
Market range: <150 ppi – >300 ppi
This ereader has a pixel density of 227 ppi which is lower than 51.6% on this spec and equal to 7.4% of eReaders.
E-paper display
yes
E-paper display
yes
â–² Better than 2% of models
This ereader uses an e-paper display. 2.5% of eReaders have an e-paper display.
Show more
Supported file types
24
Supported file types
24
â–² Better than 86% of models
Market range: <9 – >24
This ereader supports 24 file types which is more than 85.6% on this spec and equal to 5.1% of eReaders.
PDF reflow support
yes
PDF reflow support
yes
â–² Better than 45% of models
This ereader offers PDF reflow. 45.5% of eReaders support PDF reflow.
Annotation support
yes
Annotation support
yes
â–² Better than 2% of models
This ereader offers annotation support. 1.6% of eReaders offer annotation support.
Dictionary
yes
Dictionary
yes
â–² Better than 1% of models
This ereader includes a built-in dictionary. 0.8% of eReaders include a built-in dictionary.
Text-to-speech
yes
Text-to-speech
yes
â–² Better than 36% of models
This ereader offers text-to-speech. 36.1% of eReaders include text-to-speech.
Show more
Battery life
23 hours
Battery life
23 hours
â–² Better than 60% of models
Market range: <12 hours – >42 hours
This ereader offers 23 hours of battery life which is longer than 60.4% on this spec and equal to 1% of eReaders.
Battery capacity
6,300 mAh
Battery capacity
6,300 mAh
★ Better than 98% of models
Market range: <1k mAh – >4k mAh
This ereader has a battery capacity of 6,300 mAh which is higher than 98.4% on this spec and equal to 1.7% of eReaders.
Charging time
2 hours
Charging time
2 hours
â–² Better than 49% of models
Market range: <1 hours – >6 hours
This ereader takes 2 hours to charge which is quicker than 49.1% on this spec and equal to 40% of eReaders.
Supports USB-C fast charging, a 20-minute charge can add around 25% battery
Wireless charging
no
Wireless charging
no
â–¼ Worse than 7% of models
This ereader does not offer wireless charging. 7.4% of eReaders offer wireless charging.
Internal storage
128 GB
Internal storage
128 GB
★ Better than 94% of models
Market range: <2 GB – >62 GB
This ereader offers 128 GB of internal storage which is more than 94.3% on this spec and equal to 5.7% of eReaders.
RAM capacity
4 GB
RAM capacity
4 GB
â–² Better than 87% of models
Market range: <0 GB – >5 GB
This ereader offers 4 GB of RAM which is more than 86.9% on this spec and equal to 9.8% of eReaders.
CPU base clock speed
8x 2 GHz
CPU base clock speed
8x 2 GHz
â–² Better than 83% of models
This ereader has a CPU base clock speed of 8x2 GHz, which is faster than that of 82.6% of eReaders and the same as that of 12.4% of eReaders.
Operating system
Android 11
Operating system
Android 11
â–² Better than 76% of models
This ereader runs Android 11, which is more advanced than that of 76.2% of eReaders and the same as that of 17.2% of eReaders.
Memory card slot
yes
Memory card slot
yes
â–² Better than 57% of models
This ereader has a memory card slot. 57.4% of eReaders have a memory card slot.
Show more
Wi-Fi connectivity
yes
Wi-Fi connectivity
yes
â–² Better than 7% of models
This ereader connects over Wi-Fi. 6.6% of eReaders have Wi-Fi.
Wi-Fi version
Wi-Fi 5 (802.11ac), Wi-Fi 4 (802.11n)
Wi-Fi version
Wi-Fi 5 (802.11ac), Wi-Fi 4 (802.11n)
â–² Better than 58% of models
This ereader supports Wi-Fi Wi-Fi 5 (802.11ac), Wi-Fi 4 (802.11n), which is newer than that of 58.2% of eReaders and the same as that of 40.2% of eReaders.
Wi-Fi bands supported
2.4 GHz+5 GHz
Wi-Fi bands supported
2.4 GHz+5 GHz
â–² Better than 57% of models
This ereader supports 2.4 GHz+5 GHz Wi-Fi bands, which is broader than that of 57.4% of eReaders and the same as that of 42.6% of eReaders.
Bluetooth
yes
Bluetooth
yes
â–² Better than 40% of models
This ereader connects over Bluetooth. 40.2% of eReaders have Bluetooth.
Bluetooth can pair wireless accessories.
Bluetooth version
5
Bluetooth version
5
â–² Better than 58% of models
Market range: <1 – >6
This ereader supports Bluetooth 5 which is newer than 58.3% on this spec and equal to 29.2% of eReaders.
Show more
Weight
480 g
Weight
480 g
â–¼ Worse than 90% of models
Market range: <160 g – >480 g
This ereader weighs 480 g which is heavier than 90.2% on this spec and equal to 0.8% of eReaders.
Thickness
6.7 mm
Thickness
6.7 mm
â–² Better than 83% of models
Market range: <6 mm – >11 mm
This ereader is 6.7 mm thick which is thinner than 82.6% on this spec and equal to 0.8% of eReaders.
Height
225 mm
Height
225 mm
â–¼ Worse than 77% of models
Market range: <150 mm – >240 mm
This ereader is 225 mm tall which is taller than 77.1% on this spec and equal to 0.8% of eReaders.
Width
184.5 mm
Width
184.5 mm
â–¼ Worse than 84% of models
Market range: <100 mm – >200 mm
This ereader is 184.5 mm wide which is wider than 84.4% on this spec and equal to 0.8% of eReaders.
Water resistance (splashproof)
no
Water resistance (splashproof)
no
â–¼ Worse than 25% of models
This ereader does not have water resistance against splashes. 25% of eReaders have water resistance against splashes.
Show more

Onyx Boox Tab Ultra vs the average eReader

246810TotalDisplayReadingBatteryHardwareConnectivityDesign
  • 4.03x larger battery capacity
    Battery capacity
    6,300 mAh
    ★ Better than 98% of models
    Market range: <1k mAh – >4k mAh
    This ereader has a larger battery than the average eReader (6300 mAh vs 1565 mAh). The average eReader battery has a capacity of 1565 mAh.
    6,300 mAh vs 1,565 mAh
  • 3.3 inches larger screen size
    Screen size
    10.3 inches
    â–² Better than 87% of models
    Market range: <5 inches – >10 inches
    This ereader has a larger screen than the average eReader (10.3 inches vs 7 inches). The average eReader screen size is 7 inches.
    10.3 inches vs 7 inches
  • 8x more storage
    Internal storage
    128 GB
    ★ Better than 94% of models
    Market range: <2 GB – >62 GB
    This ereader offers more internal storage than the average eReader (128 GB vs 16 GB). The average eReader provides 16 GB of internal storage.
    128 GB vs 16 GB
  • 9 more supported file formats
    Supported file types
    24
    â–² Better than 86% of models
    Market range: <9 – >24
    This ereader supports a broader range of file types than the average eReader (24 vs 15).
    24 vs 15
  • Supports handwriting recognition
    Handwriting recognition
    yes
    â–² Better than 77% of models
    This ereader supports handwriting recognition, while the average eReader does not. 23.6% of eReaders support handwriting recognition.
    Built-in handwriting-to-text support.
  • 3.49 GB more RAM
    RAM capacity
    4 GB
    â–² Better than 87% of models
    Market range: <0 GB – >5 GB
    This ereader has more RAM than the average eReader (4 GB vs 0.5 GB). The average eReader has 0.512 GB of RAM.
    4 GB vs 0.512 GB
  • Memory card slot
    Memory card slot
    yes
    â–² Better than 57% of models
    This ereader includes a memory card slot, while the average eReader does not. 43.1% of eReaders include a memory card slot.
  • Faster CPU base clock speed
    CPU base clock speed
    8 x 2 GHz
    â–² Better than 83% of models
    This ereader has a faster CPU base clock speed than the average eReader (8x2 GHz vs 1x1 GHz). The average eReader has a CPU base clock speed of 1x1 GHz.
    8x2 GHz vs 1x1 GHz
  • 3.3 inches larger screen size
    Screen size
    10.3 inches
    â–² Better than 87% of models
    Market range: <5 inches – >10 inches
    This ereader has a larger screen than the average eReader (10.3 inches vs 7 inches). The average eReader screen size is 7 inches.
    10.3 inches vs 7 inches
  • 31 more front-light LEDs
    N. of front-light LEDs
    36
    ★ Better than 94% of models
    Market range: <0 – >35
    This ereader has more front-light LEDs than the average eReader (36 vs 5). The average eReader has 5 front-light LEDs.
    36 vs 5
  • Higher screen resolution
    Screen resolution
    1404x1872 px
    â–² Better than 74% of models
    This ereader supports higher screen resolution than the average eReader (1404x1872 px vs 1072x1448 px). The average eReader supports 1072x1448 px screen resolution.
    1404x1872 px vs 1072x1448 px
  • Auto-brightness sensor
    Auto-brightness sensor
    yes
    â–² Better than 59% of models
    This ereader has an auto-brightness sensor, while the average eReader does not. 41.8% of eReaders have an auto-brightness sensor.
    Ambient light sensor enables automatic brightness adjustments.
  • Supports auto-rotate
    Auto-rotate
    yes
    â–² Better than 57% of models
    This ereader supports auto-rotate, while the average eReader does not. 43.4% of eReaders support auto-rotate.
  • 9 more supported file formats
    Supported file types
    24
    â–² Better than 86% of models
    Market range: <9 – >24
    This ereader supports a broader range of file types than the average eReader (24 vs 15).
    24 vs 15
  • Supports handwriting recognition
    Handwriting recognition
    yes
    â–² Better than 77% of models
    This ereader supports handwriting recognition, while the average eReader does not. 23.6% of eReaders support handwriting recognition.
    Built-in handwriting-to-text support.
  • Supports stylus
    Stylus support
    yes
    â–² Better than 62% of models
    This ereader supports a stylus, while the average eReader does not. 38.2% of eReaders support a stylus.
    Wacom touch layer, 4,096 pressure levels
  • Broader library support
    Library lending platforms supported
    OverDrive, Libby, Hoopla, BorrowBox
    â–² Better than 80% of models
    This ereader supports more library lending platforms than the average eReader (OverDrive, Libby, Hoopla, BorrowBox vs OverDrive, Libby).
    OverDrive, Libby, Hoopla, BorrowBox vs OverDrive, Libby
  • Stylus included
    Stylus included
    yes
    â–² Better than 71% of models
    This ereader includes a stylus, while the average eReader does not. 29.3% of eReaders include a stylus.
    Pen2 Pro included.
  • 4.03x larger battery capacity
    Battery capacity
    6,300 mAh
    ★ Better than 98% of models
    Market range: <1k mAh – >4k mAh
    This ereader has a larger battery than the average eReader (6300 mAh vs 1565 mAh). The average eReader battery has a capacity of 1565 mAh.
    6,300 mAh vs 1,565 mAh
  • 2 hours longer battery life
    Battery life
    23 hours
    â–² Better than 60% of models
    Market range: <12 hours – >42 hours
    This ereader offers longer battery life than the average eReader (23 hours vs 21 hours). The average eReader offers 21 hours of battery life.
    23 hours vs 21 hours
  • 8x more storage
    Internal storage
    128 GB
    ★ Better than 94% of models
    Market range: <2 GB – >62 GB
    This ereader offers more internal storage than the average eReader (128 GB vs 16 GB). The average eReader provides 16 GB of internal storage.
    128 GB vs 16 GB
  • 3.49 GB more RAM
    RAM capacity
    4 GB
    â–² Better than 87% of models
    Market range: <0 GB – >5 GB
    This ereader has more RAM than the average eReader (4 GB vs 0.5 GB). The average eReader has 0.512 GB of RAM.
    4 GB vs 0.512 GB
  • Memory card slot
    Memory card slot
    yes
    â–² Better than 57% of models
    This ereader includes a memory card slot, while the average eReader does not. 43.1% of eReaders include a memory card slot.
  • Faster CPU base clock speed
    CPU base clock speed
    8 x 2 GHz
    â–² Better than 83% of models
    This ereader has a faster CPU base clock speed than the average eReader (8x2 GHz vs 1x1 GHz). The average eReader has a CPU base clock speed of 1x1 GHz.
    8x2 GHz vs 1x1 GHz
  • More advanced operating system
    Operating system
    Android 11
    â–² Better than 76% of models
    This ereader uses Android 11, a more advanced operating system than Kindle OS on the average eReader.
    Android 11 vs Kindle OS
  • Accelerometer included
    Accelerometer
    yes
    â–² Better than 55% of models
    This ereader has an accelerometer, while the average eReader does not. 45.1% of eReaders have an accelerometer.
  • Fingerprint scanner
    Fingerprint scanner
    yes
    ★ Better than 93% of models
    This ereader has a fingerprint scanner, while the average eReader does not. 8.1% of eReaders have a fingerprint scanner.
  • Microphone included
    Microphone
    yes
    â–² Better than 74% of models
    This ereader has a microphone, while the average eReader does not. 26.7% of eReaders have a microphone.
  • Supports USB OTG
    USB OTG support
    yes
    â–² Better than 67% of models
    This ereader supports USB OTG, while the average eReader does not. 33.9% of eReaders support USB OTG.
    OTG can connect USB drives or simple peripherals through the device port.
  • 2 more speakers
    Speakers
    2
    â–² Better than 79% of models
    Market range: <0 – >5
    This ereader has more speakers than the average eReader (2 vs 0). The average eReader has 0 speakers.
    Built-in speaker count reflects onboard audio hardware.
    2 vs 0
  • Better Wi-Fi bands
    Wi-Fi bands supported
    2.4 GHz+5 GHz
    â–² Better than 57% of models
    This ereader supports 2.4 GHz+5 GHz Wi-Fi bands, while the average eReader supports 2.4 GHz.
    2.4 GHz+5 GHz vs 2.4 GHz
  • Newer Wi-Fi version
    Wi-Fi version
    Wi-Fi 5 (802.11ac), Wi-Fi 4 (802.11n)
    â–² Better than 58% of models
    This ereader supports a newer Wi-Fi version than the average eReader (Wi-Fi 5 (802.11ac), Wi-Fi 4 (802.11n) vs Wi-Fi 4 (802.11n)).
    Wi-Fi 5 (802.11ac), Wi-Fi 4 (802.11n) vs Wi-Fi 4 (802.11n)
  • 1.4 mm thinner
    Thickness
    6.7 mm
    â–² Better than 83% of models
    Market range: <6 mm – >11 mm
    This ereader is thinner than the average eReader (6.7 mm vs 8.1 mm). The average eReader thickness is 8.1 mm.
    6.7 mm vs 8.1 mm
  • Limited DRM support
    DRM schemes supported
    No native DRM support
    â–¼ Worse than 84% of models
    This ereader supports fewer DRM schemes than the average eReader (No native DRM support vs Adobe DRM, Social DRM).
    Relies on third-party Android apps for DRM-protected content.
    No native DRM support vs Adobe DRM, Social DRM
  • 2.25x heavier
    Weight
    480 g
    â–¼ Worse than 90% of models
    Market range: <160 g – >480 g
    This ereader is heavier than the average eReader (480 g vs 213 g). The average eReader weighs 213 g.
    480 g vs 213 g
  • Less advanced E-Ink technology
    E-Ink technology
    Carta
    â–¼ Worse than 38% of models
    This ereader uses Carta E-Ink technology, while the average eReader uses Carta Plus.
    Carta vs Carta Plus
  • 14.3% lower pixel density
    Pixel density
    227 ppi
    â–¼ Worse than 52% of models
    Market range: <150 ppi – >300 ppi
    This ereader has a lower pixel density than the average eReader (227 ppi vs 265 ppi). The average eReader has a pixel density of 265 ppi.
    227 ppi vs 265 ppi
  • 56.9 mm wider
    Width
    184.5 mm
    â–¼ Worse than 84% of models
    Market range: <100 mm – >200 mm
    This ereader is wider than the average eReader (184.5 mm vs 127.6 mm). The average eReader width is 127.6 mm.
    184.5 mm vs 127.6 mm
  • 3.12x more expensive
    Onyx Boox Tab Ultra is more expensive than the average eReader (£530 vs £170).
    £530 vs £170
  • 52 mm taller
    Height
    225 mm
    â–¼ Worse than 77% of models
    Market range: <150 mm – >240 mm
    This ereader is taller than the average eReader (225 mm vs 173 mm). The average eReader height is 173 mm.
    225 mm vs 173 mm
  • 16.7% lower user score
    User score
    6.9/ 10
    ✕
    What it is
    A rating that combines user reviews and the total number of reviews received by the eReader.
    When it matters
    When you want to know how an eReader feels in daily reading and how reliable it is for screen comfort, battery life, and library management according to user feedback.
    Score distribution
    â–¼
    â–¼
    <55-66-77-88-99-10
    Onyx Boox Tab Ultra
    the average eReader
    Onyx Boox Tab Ultra has a lower user score than the average eReader (6.85 vs 8.000).
    6.85 vs 8
  • 3.12x more expensive
    Onyx Boox Tab Ultra is more expensive than the average eReader (£530 vs £170).
    £530 vs £170
  • 16.7% lower user score
    User score
    6.9/ 10
    ✕
    What it is
    A rating that combines user reviews and the total number of reviews received by the eReader.
    When it matters
    When you want to know how an eReader feels in daily reading and how reliable it is for screen comfort, battery life, and library management according to user feedback.
    Score distribution
    â–¼
    â–¼
    <55-66-77-88-99-10
    Onyx Boox Tab Ultra
    the average eReader
    Onyx Boox Tab Ultra has a lower user score than the average eReader (6.85 vs 8.000).
    6.85 vs 8
  • Less advanced E-Ink technology
    E-Ink technology
    Carta
    â–¼ Worse than 38% of models
    This ereader uses Carta E-Ink technology, while the average eReader uses Carta Plus.
    Carta vs Carta Plus
  • 14.3% lower pixel density
    Pixel density
    227 ppi
    â–¼ Worse than 52% of models
    Market range: <150 ppi – >300 ppi
    This ereader has a lower pixel density than the average eReader (227 ppi vs 265 ppi). The average eReader has a pixel density of 265 ppi.
    227 ppi vs 265 ppi
  • Limited DRM support
    DRM schemes supported
    No native DRM support
    â–¼ Worse than 84% of models
    This ereader supports fewer DRM schemes than the average eReader (No native DRM support vs Adobe DRM, Social DRM).
    Relies on third-party Android apps for DRM-protected content.
    No native DRM support vs Adobe DRM, Social DRM
  • Versions older Bluetooth
    Bluetooth version
    5.0
    â–² Better than 58% of models
    Market range: <1 – >6
    This ereader supports an older Bluetooth version than the average eReader (5 vs 5.1).
    5.0 vs 5.1
  • 2.25x heavier
    Weight
    480 g
    â–¼ Worse than 90% of models
    Market range: <160 g – >480 g
    This ereader is heavier than the average eReader (480 g vs 213 g). The average eReader weighs 213 g.
    480 g vs 213 g
  • 56.9 mm wider
    Width
    184.5 mm
    â–¼ Worse than 84% of models
    Market range: <100 mm – >200 mm
    This ereader is wider than the average eReader (184.5 mm vs 127.6 mm). The average eReader width is 127.6 mm.
    184.5 mm vs 127.6 mm
  • 52 mm taller
    Height
    225 mm
    â–¼ Worse than 77% of models
    Market range: <150 mm – >240 mm
    This ereader is taller than the average eReader (225 mm vs 173 mm). The average eReader height is 173 mm.
    225 mm vs 173 mm

Video reviews

Hands-on testing, unboxing, and real-world video evaluations

7.0
Chalid Raqami
≈ estimated
25/01/2023
In-depth review · display, software, value and price
Verdict
Onyx Boox Tab Ultra has a strong screen and Android software but is too expensive for most buyers, with better value elsewhere.
9.0
Kit Betts-Masters
≈ estimated
11/01/2023
Full review · productivity use and value
Verdict
Onyx Boox Tab Ultra is a top e-ink tablet for productivity and a strong buy with the bundle, though it is not a full laptop replacement.
8.0
ShortCircuit
≈ estimated
22/12/2022
Hands-on review · pen, notes, apps and gaming tests
Verdict
Onyx Boox Tab Ultra is a surprisingly usable full Android tablet with a good build, though typing and gaming fall short.
7.0
Tech Spurt
≈ estimated
24/11/2022
Unboxing · hands-on review of display, keyboard and performance
Verdict
Onyx Boox Tab Ultra is a good e-ink tablet overall, but pricey and held back by an older chip and Android version.
9.0
My Deep Guide
≈ estimated
23/11/2022
Hands-on review · writing, reading and tablet tests
Verdict
Onyx Boox Tab Ultra is the best e-ink tablet for writing and PC-like use, but overkill as a simple e-reader.
9.5
Good e-Reader
≈ estimated
16/11/2022
Full review · features, pen, glow light and speed tests
Verdict
Onyx Boox Tab Ultra is an all-in-one e-paper tablet that does everything well, and its only shortcoming is the lack of a color screen.
8.0
Chalid Raqami
≈ estimated
25/11/2022
First look · unboxing and early impressions
Verdict
Onyx Boox Tab Ultra is off to a promising start with a nice screen and pen, though some features still need checking.
8.0
My Deep Guide
≈ estimated
15/11/2022
First impressions · unboxing and early look
Verdict
Onyx Boox Tab Ultra leaves a fairly positive first impression, but gets very expensive once the keyboard and pen are added.
9.0
Kit Betts-Masters
≈ estimated
11/11/2022
Unboxing · first impressions and display refresh demo
Verdict
Onyx Boox Tab Ultra leaves a good early impression with a smooth feel, fast refresh modes and little ghosting.
9.0
Good e-Reader
≈ estimated
10/11/2022
First look · unboxing and first impressions
Verdict
Onyx Boox Tab Ultra feels capable and packs in much more, especially for note-taking.

Expert reviews

In-depth analysis and verdict from leading tech publications

thesweetsetup.com
06/02/2023
Personal review · E Ink tablet
Verdict
The Onyx Boox Tab Ultra suits journaling and end-of-day reading, but it is slower than an iPad and needs a case to lie flat.
techradar.com
03/03/2023
Hands-on test · E Ink Android tablet
Verdict
The Onyx Boox Tab Ultra is a capable E Ink reader and note-taker with Google Play, but its slow processor can't keep up with typing.
trustedreviews.com
08/05/2023
Hands-on review · E Ink tablet
Verdict
The Onyx Boox Tab Ultra is a full Android tablet with E Ink reading and Google Play, but its busier interface is less simple than the reMarkable 2's.
androidcentral.com
05/09/2023
Hands-on review · Note-taking e-reader
Verdict
The Onyx Boox Tab Ultra is a focused writing and reading tablet with the Play Store, though its weight and slow menus make it a poor fit for streaming.
goodereader.com
16/11/2022
Hands-on review · E Ink note-taking tablet
Verdict
The Onyx Boox Tab Ultra is the fastest Onyx tablet reviewed so far, and its layered pen notes and quick PDF markup suit artists and teachers.
makeuseof.com
13/12/2022
Hands-on review · E Ink productivity tablet
Verdict
The Onyx Boox Tab Ultra suits focused reading, note-taking and home-office work, thanks to its quick page turns and long battery life, though games and video struggle.
tagesanzeiger.ch
21/03/2023
Hands-on test · E Ink Android tablet
Verdict
The Onyx Boox Tab Ultra suits people who know E Ink's limits; its paper-like pen writing and Android apps impress, but black-and-white video and laggy typing hold it back.
D
derbund.ch
21/03/2023
Summary of the review
Better than the iPad? Boox Tab Ultra Review
(Translated)Show original
zdnet.fr
25/04/2024
Hands-on test · E Ink note-taking
Verdict
The Onyx Boox Tab Ultra is best for note-taking, with an eraser pen and 128GB storage, but it is heavy and its scanner misses text.
tomshw.it
03/05/2023
Hands-on test · E Ink tablet
Verdict
The Onyx Boox Tab Ultra is a good reader and note-taker, but slow menus and weak typing make it hard to recommend over rivals.
hwupgrade.it
Not Dated
Long-term review · Android E Ink tablet
Verdict
The Onyx Boox Tab Ultra is a versatile E Ink tablet with a good pen and Play Store access, but at 480 g it feels heavy when carried all day.

Third-party reviews

Based on 120 buyer reviews from online shops.
Reviews last updated: October 2026 · How we calculate this
Read buyer reviews on Amazon →

What we like about Onyx Boox Tab Ultra

  • Full access to the Google Play Store allows for extensive third-party app support beyond standard ereaders.
  • Exceptional refresh rates for an E Ink device, featuring multiple modes like 'Ultrafast' that even allow for basic video playback.
  • Versatile productivity features including a responsive stylus for note-taking and support for a dedicated magnetic keyboard cover.
  • Robust build quality with a premium metal chassis and a built-in fingerprint scanner for added security.
  • Large 10.3-inch display is excellent for reading PDFs and comics, providing a comfortable, eye-friendly experience.
  • Significantly better battery life than traditional LCD tablets, often lasting over a week with light usage.

What we don't like about Onyx Boox Tab Ultra

  • Considerably heavier (approx. 480g) than competitors like the reMarkable 2, making one-handed use tiring over time.
  • The 16MP rear camera bump prevents the device from laying flat on surfaces and is often described as poor for document scanning.
  • The E Ink screen lacks the vibrant colors and high refresh speeds of an iPad, leading to a 'clunky' experience for web browsing or media.
  • Battery drains much faster than standard ereaders (like Kindles) when using 'Super Refresh' technology or Wi-Fi.
  • Software experience can be inconsistent, with some Android apps not scaling well or showing ghosting on the monochrome display.
  • Steep learning curve due to complex menus and a lack of clear documentation for some settings.

Verdict

The Onyx Boox Tab Ultra is a high-performance 10.3-inch E Ink tablet designed for productivity, featuring a 227 DPI Carta glass screen and powered by a Qualcomm octa-core processor with 4GB of RAM and 128GB of internal storage (expandable via microSD). Running on Android 11 with full Google Play Store access, it distinguishes itself with Boox Super Refresh technology for smooth screen transitions, a 16MP rear camera for document scanning, and a massive 6,300mAh battery. Main pros include its versatile software ecosystem, a built-in fingerprint sensor for security, and a professional unibody design that supports an optional magnetic keyboard. However, its notable cons include a heavy 480g weight that can cause wrist fatigue during one-handed use, tinny dual speakers, and a camera that often produces dark or shadowed scans compared to modern smartphones.

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